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//
// "$Id: filename_absolute.cxx,v 1.5.2.4.2.8 2002/05/16 12:47:43 easysw Exp $"
//
// Filename expansion routines for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2002 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems to "fltk-bugs@fltk.org".
//
/* expand a file name by prepending current directory, deleting . and
.. (not really correct for symbolic links) between the prepended
current directory. Use $PWD if it exists.
Returns true if any changes were made.
*/
#include <FL/filename.H>
#include <stdlib.h>
#include "flstring.h"
#include <ctype.h>
#if defined(WIN32) && !defined(__CYGWIN__)
# include <direct.h>
//# define getcwd(a,b) _getdcwd(0,a,b)
#else
# include <unistd.h>
# ifdef __EMX__
# define getcwd _getcwd2
# endif
#endif
#if defined(WIN32) || defined(__EMX__) && !defined(__CYGWIN__)
inline int isdirsep(char c) {return c=='/' || c=='\\';}
#else
#define isdirsep(c) ((c)=='/')
#endif
int fl_filename_absolute(char *to, int tolen, const char *from) {
if (isdirsep(*from) || *from == '|'
#if defined(WIN32) || defined(__EMX__) && !defined(__CYGWIN__)
|| from[1]==':'
#endif
) {
strlcpy(to, from, tolen);
return 0;
}
char *a;
char *temp = new char[tolen];
const char *start = from;
a = getcwd(temp, tolen);
if (!a) {
strlcpy(to, from, tolen);
delete[] temp;
return 0;
}
#if defined(WIN32) || defined(__EMX__) && !defined(__CYGWIN__)
for (a = temp; *a; a++) if (*a=='\\') *a = '/'; // ha ha
#else
a = temp+strlen(temp);
#endif
if (isdirsep(*(a-1))) a--;
/* remove intermediate . and .. names: */
while (*start == '.') {
if (start[1]=='.' && isdirsep(start[2])) {
char *b;
for (b = a-1; b >= temp && !isdirsep(*b); b--);
if (b < temp) break;
a = b;
start += 3;
} else if (isdirsep(start[1])) {
start += 2;
} else if (!start[1]) {
start ++; // Skip lone "."
break;
} else
break;
}
*a++ = '/';
strlcpy(a,start,tolen - (a - temp));
strlcpy(to, temp, tolen);
delete[] temp;
return 1;
}
/*
* 'fl_filename_relative()' - Make a filename relative to the current working directory.
*/
int // O - 0 if no change, 1 if changed
fl_filename_relative(char *to, // O - Relative filename
int tolen, // I - Size of "to" buffer
const char *from) { // I - Absolute filename
const char *newslash; // Directory separator
const char *slash; // Directory separator
char cwd[1024]; // Current directory
if (from[0] == '\0' || !isdirsep(*from)) {
strlcpy(to, from, tolen);
return 0;
}
if (!getcwd(cwd, sizeof(cwd))) {
strlcpy(to, from, tolen);
return 0;
}
for (slash = from, newslash = cwd;
*slash != '\0' && *newslash != '\0';
slash ++, newslash ++)
if (isdirsep(*slash) && isdirsep(*newslash)) continue;
#if defined(WIN32) || defined(__EMX__) || defined(__APPLE__)
else if (tolower(*slash) != tolower(*newslash)) break;
#else
else if (*slash != *newslash) break;
#endif // WIN32 || __EMX__ || __APPLE__
if (*newslash == '\0' && *slash != '\0' && !isdirsep(*slash))
newslash--;
while (!isdirsep(*slash) && slash > from) slash --;
if (isdirsep(*slash)) slash ++;
#if defined(WIN32) || defined(__EMX__)
if (isalpha(slash[0]) && slash[1] == ':') {
strlcpy(to, from, tolen);
return 0; /* Different drive letter... */
}
#endif /* WIN32 || __EMX__ */
if (*newslash != '\0')
while (!isdirsep(*newslash) && newslash > cwd) newslash --;
to[0] = '\0';
to[tolen - 1] = '\0';
while (*newslash != '\0') {
if (isdirsep(*newslash)) strlcat(to, "../", tolen);
newslash ++;
}
strlcat(to, slash, tolen);
return 1;
}
//
// End of "$Id: filename_absolute.cxx,v 1.5.2.4.2.8 2002/05/16 12:47:43 easysw Exp $".
//
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